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Revision total knee arthroplasty: how much constraint is enough?
1Insall Scott Kelly Institute for Orthopedics and Sports Medicine, New York, NY 10128, USA.
Clinical Orthopaedics and Related Research
|November 22, 2001
Summary
Revision total knee arthroplasty demands careful technique for optimal outcomes. Posterior-stabilized implants are common, but constrained prostheses are needed for severe ligamentous instability or deformities.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
Background:
- Revision total knee arthroplasty presents unique surgical challenges.
- Restoring joint anatomy, function, and stability are key objectives.
Purpose of the Study:
- To outline the principles and prosthesis selection for revision total knee arthroplasty.
- To define criteria for choosing between posterior-stabilized and constrained implants.
Main Methods:
- Review of surgical objectives in revision total knee arthroplasty.
- Discussion of implant constraint levels based on knee stability.
Main Results:
- Posterior-stabilized (PS) prostheses are preferred for most revision cases.
- Constrained condylar prostheses are indicated for significant collateral ligament deficiency or deformity.
Conclusions:
- Implant selection in revision total knee arthroplasty balances stability and constraint.
- Appropriate prosthesis choice is critical for functional outcomes in complex revision cases.
